Recommended by IRS

About Form W-9, Request for Taxpayer Identification Number (TIN) and Certification

Information about Form W-9, Request for Taxpayer Identification Number (TIN) and Certification, including recent updates, related forms and instructions on how to file.

Form W-9 PDF
PDF version of Form W-9.
Instructions for Form W-9 PDF
Instructions explaining how to file Form W-9.

Forms and associated taxes for independent contractors

Find Form W-9, Form 1099 and instructions on filing electronically for independent contractors.
General Information
Small Businesses

Form bank — Withholding-related forms

Withholding related forms and instructions.
General Information
Businesses

FATCA related forms

FATCA related forms and instructions.
General Information
Corporations

Employment tax forms

Find employment tax forms a small business or self-employed person needs to file their taxes.
General Information
Small Businesses

Payments to nonqualified intermediaries

If you are making a payment to a nonqualified intermediary, foreign flow-through entity, or U.S. branch that is using Form W-8IMY to transmit information about the branch's account holders or customers, you can treat the payment.
General Information
Large Businesses

Payments to Qualified Intermediaries

Generally, a QI is any foreign intermediary that has entered into a QI withholding agreement with the IRS.
General Information
Large Businesses

FATCA – Current alerts and other news

FATCA items of current interest – new updates, recent guidance and related news.
General Information
Corporations

Backup withholding "C" program

The IRS will contact the taxpayer (payee) if they fail to report or fully report, on their federal income tax return, the correct amount of interest and dividend income on their federal income tax return.
General Information
Small Businesses

Single member limited liability companies

Review information about the Limited Liability Company (LLC) structure and the entity classification rules related to filing as a single-member limited liability company.
General Information
Small Businesses

Backup withholding

Find out what payments are subject to and exempt from backup withholding and how to prevent or stop it.
General Information
Small Businesses